Please see my index post over at my dreamwidth fic journal for an index of stories by fandom, or use the tags here. (The index post is now too large to crosspost from Dreamwidth.)
I have written stories in the following fandoms: Few Options, The Kill Point, Supernatural, Stargate: Atlantis, Sons of Anarchy, Eagle of the Ninth and other works by Rosemary Sutcliff, Haven, Firefly, Tolkien, Dark Angel, Miracles, The Magic of Ordinary Days, Jericho and Watership Down.
I generally add tags only for characters who play a significant role in a story, and not for characters who only make a cameo appearance and don't contribute significantly to advancing the plot. Where there are a large number of charcters who each have small but fairly critical roles in advancing the plot, I use the ensemble cast/secondary characters tag.
While everything I post is "read at own risk", I do aim to warn for the major categories of physical violence, sexual violence and major character death, and indicate that no warnings are necessary if none of these apply. (This is broadly in line with AO3's system of warnings; I'd also warn for underage, but I don't think I've ever written any.) Sometimes I forget to include warnings, so please let me know if you think a warning should be included. Ratings are based on typical British values for what is appropriate for each age; this means I'm more likely to rate high for violence than for sexual content or language.